๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Radar studies of the non-spherically symmetric solar corona

โœ Scribed by Stanley P. Owocki; Gordon A. Newkirk; David G. Sime

Publisher
Springer
Year
1982
Tongue
English
Weight
792 KB
Volume
78
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

We review the results of radar studies of the Sun made at E1 Campo, Texas 1961-69 with particular emphasis on the record of observed solar radar cross sections. Using ray traces which include the effects of refraction, absorption, and scattering in non-spherically symmetric models of the corona, we investigate the role of focusing by large-scale coronal geometries in enhancing the radar cross section. We find that certain coronal geometries (e.g. disk-center coronal holes) can, in principle, significantly increase the radar cross section. However the observations of large cross sections do not correspond very well with periods when such large-scale focusing geometries existed in the corona. We conclude that the present dataset does not support the hypothesis that radar observations of the Sun will be useful in determining the properties of large-scale coronal features.

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